Valve



May 5, 1953 o. H.'LUDEMAN 2,637,520

VALVE Filed March 25.' 1952 JNI/ENTOR. OSCA Q H. L UDE MA Al TTORNEY Patented May 5, 1953 I orifice TVALVE @near H. inademen, New York, N. Y.

Application 'March 25, 1952, Serial 'No.278A37 a. tubular cylindrical member which is removably,

ymounted withinfthe valve body. Such'aivalve Ais shown lfor example in my J:zo-pending application Serial No. 257,787 filed November 23, 195-1, of

which the vpresent application is fa continuation-v inwpart. The outerendof :the cylindrical member is solid as distinguished from tubular and locking means are provi-ded between .this 'portion o the fcylin' drica-l member and the valve body 'which takes, the steam vtlnust fon 'the valve land looks. the

cylindrical member within the valve body.

'Io prevent steam leakage between the outer end of :the cylindrieallmember, andthe valve'body I provide. a groote .between theLcylind-rical :meme fber Land the valve lbody 'which is sealed by :a

`sealing ring removably held in place eby A.a belted down clamping ring.-

To yremove the valve rassembly Atrom fthe valvev body it is simply necessary to remove the clamp ing ring and then .by giving tbecyflndrical mem-` .ber .a partial turn to diseneagetheflocking rmeans the valve and cylindrical memberumay .be pulled out as a unit through `the :open zend of the valve section and the `greci/e ,may .be .complementary thereto; or the ring xand groove may be so .shaped that .line contact is .made with the grootte .so 'es' to provide a .hermetic seal. The ring .and seat are of suitable metals. and Whenever .it may be found desirablefeitherfone or both may be ground to precise shape.

In the accompanying drawing El. -illustrated an Aembodiment vof my `invention in sectional elevation.

y Referring tothe drawing detail 2 designates the valve body, 4 designates the valve, and f6 designates Athe seat .for the valve.

vll .designates fa tubular `cylindrical `member which is removably mounted within the valve body 2. This member 8, in fact the entire valveA assembly can be withdrawn through the outer end of the valve body, but is normally lockedy against such withdrawal by lugs or projections l provided at intervals circumferentially of the cylindrical member, these lugs cooperating with lugs I2 provided at intervals on the inner face of .2 l the `.valve body. *"By simply giving the cylindrical member 1a Apartial .turn the'lugs 10wll1 disengage the 'lugs "l2 rvso 'that *the entire assembly `is rtree to 'be withdrawn "through the y'open end of 'the vvalve "body.

The valve stem is designated H and :projects 'through Athe solid outer end of the cylindrical tubular niem'ber 8 to `the exterior 'of 'the valve 'body where may be operated by-any 'convenient means, .as "for exi-imple, by detachable means such as disclosed in my eo-pendingapplication above referred to.

.As 'will be -observed from `the ydrawing lthe tubu- 1 lar jp'ortion of the cylindrical Amem'ber 8 has Aa .continuous wal-13 Aforbut a `short distance beyond 'the inner face of the -solid outer end of thecy'lin- Vdrcal member, just enough to provide a substan- :tial overlapping of the vvalve `Il, when the latter is closed. l""1'ointl1'is point tothe inner end o'iithe tubular lportion ,of the cylindrical member the tubular wall `s lfortified to Aprovide three `spaced "legs -5 which 'help lto guide the yvalve its vopening Vand closing movements, the inner ends `of .these 'legs abutting lugs "l which are formed on the interior V,of the valve body to prevent deilec- `tion of the legs 5. TBy this arrangement I provide for the minimum resistance `.to steam new past the ycylindrical member.

"With the valve in service :it Vwill `Ibe appreciated that while the lugs I0 and I2 will take 'the steam thrust, somemeans must V'be `provided toprevent leakage .or steam between the outer end-of the member i8 andthe valve body '2. In thislconnec- 'tion I provide an annular groove i6 inthe valve .body 2 and surrounding the outer end of `the member '8. Welded Vor otherwise permanently secured Iin this groove Vin the construction illus# trated'is a metal `ring or'liner t8. `This liner may .be A'ana'fll'oy or vcorrosionresistant steel. The vinner face `of 'the *liner ring vI8 is Ashown as bevelled at 20, and the periphery of the outer end of the member 8 is similarly bevelled in the opposite direction 'asf'shown at 22, vso as ytoqprovidt-r `awedge- 'shaped :annular groove between -the Ivalve lbedy 'and the member *8.

24 designa-tes a Asealing ring `which preferably is an alloy and is heldin place by a clamping Iring 26 which may or may not be integral with it and is bolted by bolts 28 to the end face ofgthe member 8. The lower or inner end of the sealing ring is shown as wedge-shaped so as accurately to t the wedge-shaped annular groove I6 above described between the valve body and the member 8. If desired the cross-section of the ring 24 may be altered so as to provide merely a line 3 contact between the ring and the sealing groove.

When the nuts on the bolts 28 are set up it will be quite apparent that the sealing ring will be drawn down into the sealing groove to provide a steam tight joint between member 8 and the valve body, and to draw the lugs l0 and I2 into solid contact.

Inasmuch as the nuts on the bolts 28 are accessible at any disposition of the valve body, it will be apparent that should a leak'develop at any time between the' sealing ring and its seal, it is a simple matter to tighten the bolt nuts. By the same token it is a simple matter when necessary to remove the bolt nuts and lift off the sealing ring, so that the valve assembly may be removed from the valve body.

While the sealing groove and sealing ringare accurately shaped initially it will be apparent that at any time it may be necessary or desirable the sealing ring may be made available for grinding `by'simply removing the bolt vnutsand lifting off the ring. The sealing grooveA I6 or4 seat'. for the ring can of course be ground in place without -removal of the valve assembly and without disassembling the valve to any extent other than gto remove the sealing ring.

It will be seen from au of the foregoing that I have provided a very simple construction to meet `my.. requirements. All parts are readily accessible at all times and nothing more is required to tweena valve and its body. `Such construction,

however, has many disadvantages as compared with my invention. Usually some sort of a ring necessarily is provided below the weld site to prevent accidental fusing of the valve body and :valve -in the welding operation,` and in some constructions it has been found necessary to provide another ring below the first one to prevent flow or splattering of the welding metal ybelow the welding area. Then again when the valve is to be removed from its body the Welding seal has to be chipped and burned out, all of which is time consuming, and requires the services of a ,skilled Welder, and furthermore the valve may be so located that it is impossible to apply a welding 'torch to it. i

In my construction no tools other than a 4wrench are required, and no special skill is necv.essary to remove the nuts from the bolts 28 and lift off the sealing ring, nor is it material in what position the valve body may be installed.

It is to be understood that the mechanism for i .opening and closing the valve is immaterial so far as the present invention is concerned, and the operating mechanism of my co-pending application has been mentioned merely for purposes of Iillustration. i

What I claim is: y

. 1. In valve mechanism the combination of a valve body, a cylindrical member within the valve body, locking lugs on the interior of the valve ybody and on the exterior of said cylindrical mem- ,ber, said lugs being spaced from each other circumferentially of the valve body and cylindrical member, the lugs on the body being staggered with respect to those on the cylindrical member whereby the two sets of lugs may be disengaged by partially rotating the cylindrical member, to permit the latter to be withdrawn endwise from the valve body, a valve within the cylindrical member and having a stem passing to the exterior of the cylindrical member, whereby the valve and cylindrical member may'be removed as a unit from thevalvebody, an annular sealing i groove between the valve body and the outer end of the said cylindrical member, a sealing ring seating in said groove, and a clamping ring rein sealingy .relation to said groove.

' 2. In valve mechanism the combination of a valve body, a cylindrical member removably mounted therein locking lugs on the interior of the vvalve body cooperating lugs on the exterior of the cylindrical member for removably locking the cylindrical member in the valve body, an an- -nular- -sealing groove between the cylindrical member and valve body, a. sealing ring overlying and extending into said annular sealing groove, and a clamping ring bolted to the end of the cylindrical member and bearing against said sealing ring to force the latter into the said channel to provide a hermetic seal between the cylindrical member and the valve body and to vdraw said jlocking lugs into-.firm engagement with each other. y ,l Y

v l3. In valve mechanism the combination of a valve body, a cylindrical member removably 'mounted therein, the outer end of said cylindrical member being solid, its intermediate portion being tubular, and its inner end being'tubular with portions removed to provide leg-like elements extending lengthwise of the member into contact Vwith the bottom portion of the valve'body, a valve; adapted to be reciprocated in said cylindrical member while being guided by said leg formation and by the said Iintermediate portion of the cylindrical member locking lugs on the interior of the valve body and cooperating lugs on the exterior of the solid portion of the cylindrical member, said sets of lugs being staggered relatively whereby when the'cylindrical member is rotated for a partial turn the lugs will be disengaged, an annular sealing groove at the outer end of thecylindrical member -between it and the valve body, a sealing ring overlying said groove, and a clamping ring bolted to the outer end of the cylindrical member for forcing the sealing ring into the said groove to provide a hermetio seal and to draw the locking lugs into ",solid contact with each other.

OSCAR LUDEMAN.

v-Ref`erences Cited in the file of this patent UNITED STATES PATENTS Number 

